Clamp



(No Model.)

W. CARROLL.

CLAMP.

Patented May 1890.

INVENTOR:

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UNITED STATES PATE T FFICE.

WILLIAM oARRoLL, or COLUMBUS, OHIO.

CLAMPL SPECIFICATION forming part of Letters Patent No. 427,300, datedMay 6, 1890.

Application filed May 10, 1889.

To all whom it may concern:

Be it known that 1, WILLIAM CARROLL, of Columbus, in the county ofFranklin and State of Ohio, have invented a new and Improved Clamp, ofwhich the following is a full, clear, and exact description.

The invention relates to stove-blocks and stove-clamps, such as shownand described in the United States Letters Patent Nos. 378,572

and 390,751, granted to me and O. A. Hill February 28, 1888, and October9, 1888, respectively.

The object of the invention is to provide a new and improved clampdesigned as a benchr 5 clamp for pattern, cabinet, and box makers, andalso for the use of stove-makers, serving to conveniently hold the doorsof the stoves and other parts in place on the stove-casing while fittingon the pintles, hinges, 850.

so The invention consists of a spring-pressed rod held to slide in acasing, a head held on the said rod, and a table held on the saidcasing.

The invention also consists of certain parts and details andcombinations of the same, as will be fully described hereinafter, andthen pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure 1 is a sectional side elevation of the improvement. Fig. 2 is aplan view of the 3 5 table-bracket. Fig. 3 is a plan view of thehand-wheel, and Fig. 4 is a sectional plan view of the head on the lineat a; of Fig. 1.

The improved clamp is provided with a cylindrical casing A, having atits bottom a base B, adapted to be secured to a table or bench, if usedas a carpenters clamp. In the cylindrical casing A is held a rod 0,having its bearing in a head A, formed in the casing A. On the lower endof the rod 0 is 45 held a collar D, fitting into the cylindrical casingA and supporting one end of the spring E, formed on the said rod 0, andpressing at its other end against the head A, as is plainly shown inFig. 1. On the outer end of the rod O is secured a handle F, whichserves to raise or lower the rod 0 in the casing A. A set- Serial No.310,279. (No model.)

screw G screws in the head A against the rod O, to lock the latter inplace when raised or lowered to any desired position.

The outer end 0 of the rod 0 is curved 5 5 downward and is provided witha screwthread 0 on which screws a nut H, made in the form of ahand-wheel, as is plainly shown in Figs. 1 and 3. From thescrew-threaded part 0 of the rod 0 extends an offset C on which is heldto slide the shank I of a head I, preferably made in disk form. On thelower end of the said offset 0 is secured a collar J, fitting into theshank I and supporting one end of the spring K, coiled around the 6-;said offset 0 and pressing against the upper end of the shank I, as isplainly shown in Fig. 1. In order to prevent the head I from turning onthe offset 0 I provide the shank I with grooves 1 into which fit lugs J,projecting from the collar J. (See Fig. 4.)

On the casing A is held to slide vertically a bracket L, adapted to besecured in place on the said casing by a set-screw N, screwing in thebracket against the said casing. On the outer end of the bracket L andon top of the same is formed an aperture L, into which fits thelowerhalf of man 0, forming a shank for a table P, located directlybeneath the head I. Around the aperture in the bracket L are formed anumber of lugs L which are bent over the upper part of the ball 0 Whenthe latter is in place in the aperture L. WVhen the lugs L are thus bentover, the ball 0 is'prevented from passing out of the aperture L, whileat the same time the lugs per mit the turning of the ball and its tableso that the latter can assume any desired inclination.

The operation is as follows: When the bracket L is secured on thecasingA and the operator desires to clamp an article, he moves thehandle F upward, so as to compress the spring E, and then places thearticle on the table P, after which the operator releases the 9 5pressure on the handle F. The rod O now moves downward by the action ofthe compressed. spring E, so that the head I is pressed in contact withthe top of the article resting on the table P. The rod 0 is then lookedin too place on the casing by the set-screw Gr. The article is thusclamped between the table P the hand-wheel nut H upward, whereby thespring K forces the head I upward out of contact with the articleclamped. Thus it will be seen that a very simple and convenient deviceis provided for clamping any desired articles and releasing the sameafter the work has been accomplished.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In a clamp, the combination, with a casing, of a spring-pressed rodheld to slide in the said casing, a head held adj ustably on the outerdownward-bent end of the said rod, and a table held adjustably on thesaid casing, substantially as shown and described.

2. I11 a clamp, the combination, with a casing, of a spring-pressed rodheld to slide in the said casing, a head held adjustably on the outerdownward-bent end of the said rod, a table held adjustably on the saidcasing, and means, substantially as described, for adjusting the saidhead on the said rod, substantially as specified.

3. In a clamp, the combination, with a casing, of a spring-pressed rodheld to slide in the said casing, a head held adjustably on the outerdownward-bent end of the said rod, a table held adjustably on the saidcasing, and a set-screw for locking the said rod in place on the saidcasing, substantially as shown and described.

4. In a clamp, the combination, with a casing, of a spring-pressed rodheld to slide in the said casing, a head held adjustably on the outerdownward-bent end of the said rod, a table held adj ustably on the saidcasing, a set-screw for locking the said rod in place on the saidcasing, and a handle for raising or lowering the said rod, substantiallyas shown and described.

5. In a clamp, the combination, with a casing, of a spring-pressed rodheld to slide in the said casing, a spring-pressed head held to slide onthe bent end of the said rod, and means, substantially as described, foradj usting the said spring-pressed head on the said rod, as set forth.

6. In a clamp, the combination, with a casing, of a spring-pressed rodheld to slide in the said casing,.a spring-pressed head held to slide onthe bent end of the said rod, means, substantially as described, foradjusting the said spring-pressed head on the said rod, and a table heldadjustably on the said casing, substantially as shown and described.

7. In a clamp, the combination, with a casing, of a spring-pressed rodheld to slide in the said casing, a spring-pressed head held to slide onthe bent end of the said rod, means, substantially as described, foradjusting the said spring-pressed head on the said rod, a bracket heldadjustably on the said casing, and a table mounted to turn on the saidbracket and located beneath the said head, substantially as shown anddescribed.

8. In a clamp, the combination, with a rod, of a spring-pressed headheld to slide on the said rod, and a nut screwing on the said rodagainst the said head, substantially as shown and described.

9. In a clamp, the combination, with a rod, of a head having acylindrical shank held to slide on the said rod, a spring held in thesaid shank, and a nut screwing on the said rod against the said shank,substantially as shown and described.

10. In a clamp, the combination, with a rod, of a head having acylindrical shank held to slide on the said rod, a spring held in thesaid shank, a nut screwing on the said rod against the said shank, and acollar secured on the end of the rod and supporting one end of the saidspring, substantially as shown and described.

WILLIAM CARROLL. Witnesses:

D. GILPIN, R. M. DAKIN.

